Phase angle Polarization Error (degree) (%) (%) 15 6.9 3.0 20 5.8 3.4 30 5.1 3.1 40 5.3 3.9 50 10.4 2.7 60 10.3 5.0 70 18.8 5.0 80 17.7 4.7 90 31.5 3.9 100 25.4 3.2 110 37.6 4.7 120 30.4 3.1 130 33.9 5.0 140 34.9 5.0 150 18.3 3.7 160 5.8 2.1 165 8.4 3.3